Match the agricultural term in column 1 with the definition in column 2.
Terracing
Selecting the most
efficient crops
Cutting fields into steep
Monoculture
Irrigation
Controlling the flow of
water to crops
Machinery
Replacing animal power
with machine power

Match your vocabulary word to its definition. 1. emigration 2. immigration 3. migration 4. overpopulation 5. sustainable development 6. under population 7. unsustainable development 8. urbanization the movement from one place to another the number of people exceeds the available natural resources in an area leaving one's homeland to settle in a new place the increase in the population of a city the movement of people to a new country the ability to meet current needs without reducing the ability to meet future needs resources being used up at a faster rate than they can be replenished birth rate insufficient to replace the existing population